System information

FCD 901 48
Issue R2A, 07.2009
XMP1 Release 5.5 System Description
Ethernet over SDH in the XMP1 System
Aastra Proprietary Information Page 4-1
Chapter 4
Ethernet over SDH in the XMP1 System
4.1 Introduction
The four Fast Ethernet ports available on the Ethernet over SDH Core Unit
(EoSCU) module of the XMP1 system are provided for 'Transparent LAN
Services' (TLS). They permit a point-to-point transmission of Ethernet
signals between two units equipped with Ethernet interfaces via the SDH
network. Ethernet traffic is transported transparently from one end of the
SDH network to the other.
For this purpose, the 'Encapsulation' procedure GFP (Generic Framing
Procedure) is used. Transmission in the SDH network takes place either via
a single virtual container (VC-12, VC-3) or a group of several concatenated
VCs.
The Ethernet over SDH Core Unit (EoSCU) module is based on the SDH
Core Unit (SCU) module of the SDH expansion.
OMS 1664
PDH Dienste
- Sprache
- Daten (niedrige Bitrate)
- Ethernet (n x 64k)
STM-1/4
XMP1
OMS1664
XMP1
LAN
SDH Tributary-
Schnittstellen
-6 x 2Mbit/s
- 4 x FastEthernet
OMS 1664
PDH services
-Voice
- Data (low bit rate)
- Ethernet (n x 64k)
STM-1/4
XMP1XMP1
OMS1664
OMS1664 XMP1
LANLAN
SDH Tributary
interfaces
-6 x 2Mbit/s
- 4 x FastEthernet
LANLANLAN
Ethernet transparent
in VC12 or VC3
EoSCU
EoSCU